How To Fix WL150 - Invalid ABAP type when passing expression &

WL150 - Overview

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 150

• Message text: Invalid ABAP type when passing expression &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WL150 - Invalid ABAP type when passing expression & ?

  The SAP error message WL150 "Invalid ABAP type when passing expression &" typically occurs when there is an issue with the data type of a variable or expression being used in an ABAP program. This error can arise in various contexts, such as when calling function modules, methods, or when passing parameters.
  Causes:
  
  Incorrect Data Type: The variable or expression being passed does not match the expected data type of the parameter in the function module or method.
  Uninitialized Variables: If a variable is not properly initialized or declared, it may lead to this error.
  Incompatible Structures: If you are trying to pass a structure or table that does not conform to the expected structure or table type.
  Dynamic Typing Issues: If you are using dynamic programming techniques (like FIELD-SYMBOLS or DATA with TYPE), the type may not be correctly defined or resolved at runtime.
  
  Solutions:
  
  Check Data Types: Ensure that the data types of the variables